body {
    color: blueviolet;
    background-color: #A0EEE1;
    text-align: center;
    font-size: 40px;
}

#op {
    margin-top: 280px;
}

a {
    color: #ea66a6;
    text-decoration: none;
}

.back {
    font-size: 90px;
    margin-top: 170px;
}

@media (max-width: 1000px) {
   #back-div{
       font-size: 80px;
       margin-top: 200px;
   }
}
